# Lessons on Form: Or, An Introduction to Geometry, as Given in a Pestalozzian School, Cheam, Surrey

Taylor and Walton, 1837 - 215 σελίδες

### Περιεχόμενα

 Description of the five regular Solids 9 Ditto 11 Ditto 13 The Rhomboidal Dodecahedron 18 The Bipyramidal Dodecahedron 20 The Trapezohedron 21 The Pyramid 22 The Prism 25
 The Cone 31 ANGLES SECTION 1 One and Two Straight Lines 33 Three Straight Lines 48 One Triangle 63 Two Trianglestheir Equality 74 Equality of Triangles 88 Quadrilateral Figures 99 CHAPTER II 161

### Δημοφιλή αποσπάσματα

Σελίδα 98 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.
Σελίδα 134 - In obtuse-angled triangles, if a perpendicular be drawn from either of the acute angles to the opposite side produced, the square on the side subtending the obtuse angle, is greater than the squares on the sides containing the obtuse angle, by twice the rectangle contained by the side...
Σελίδα 137 - In every triangle, the square of the side subtending either of the acute angles is less than the squares of the sides containing that angle, by twice the rectangle contained by either of these sides, and the straight line intercepted between the perpendicular let fall upon it from the opposite angle, and the acute angle.
Σελίδα 219 - A very convenient class-book for junior students in' private schools. It is intended to convey, in clear and precise terms, general notions of all the principal divisions of Physical Science.